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Four identical iron bars were dipped in a heap of iron filings one by one. Figure shows the amount of iron filings sticking to each of them.
Figure (a)
Figure (b)
Figure (c)
Figure (d)
(a) Which of the iron bar is likely to be the strongest magnet?
The iron bar shown in figure is likely to be the strongest magnet. It is because are stuck to the magnet than any other iron bars.
(b) Which of the iron bars is not a magnet? Justify your answer.
The iron bar shown in figure is not a magnet because are sticking to the magnet.
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